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package sun.security.x509;

/**
 * CertException indicates one of a variety of certificate problems.
 *
 * @author David Brownell
 * @see java.security.Certificate
 * @deprecated use one of Exceptions defined in the java.security.cert
 * package.
 */
@Deprecated
public class CertException extends SecurityException {

    @java.io.Serial
    private static final long serialVersionUID = 6930793039696446142L;

    // Zero is reserved.

    /**
     * Indicates that the signature in the certificate is not valid.
     */
    public static final int verf_INVALID_SIG = 1;

    /**
     * Indicates that the certificate was revoked, and so is invalid.
     */
    public static final int verf_INVALID_REVOKED = 2;

    /**
     * Indicates that the certificate is not yet valid.
     */
    public static final int verf_INVALID_NOTBEFORE = 3;

    /**
     * Indicates that the certificate has expired and so is not valid.
     */
    public static final int verf_INVALID_EXPIRED = 4;

    /**
     * Indicates that a certificate authority in the certification
     * chain is not trusted.
     */
    public static final int verf_CA_UNTRUSTED = 5;

    /**
     * Indicates that the certification chain is too long.
     */
    public static final int verf_CHAIN_LENGTH = 6;

    /**
     * Indicates an error parsing the ASN.1/DER encoding of the certificate.
     */
    public static final int verf_PARSE_ERROR = 7;

    /**
     * Indicates an error constructing a certificate or certificate chain.
     */
    public static final int err_CONSTRUCTION = 8;

    /**
     * Indicates a problem with the public key
     */
    public static final int err_INVALID_PUBLIC_KEY = 9;

    /**
     * Indicates a problem with the certificate version
     */
    public static final int err_INVALID_VERSION = 10;

    /**
     * Indicates a problem with the certificate format
     */
    public static final int err_INVALID_FORMAT = 11;

    /**
     * Indicates a problem with the certificate encoding
     */
    public static final int err_ENCODING = 12;

    // Private data members
    private int verfCode;
    private String moreData;


    /**
     * Constructs a certificate exception using an error code
     * (<code>verf_*</code>) and a string describing the context
     * of the error.
     */
    public CertException(int code, String moredata) {
        verfCode = code;
        moreData = moredata;
    }

    /**
     * Constructs a certificate exception using just an error code,
     * without a string describing the context.
     */
    public CertException(int code) {
        verfCode = code;
    }

    /**
     * Returns the error code with which the exception was created.
     */
    public int getVerfCode() {
        return verfCode;
    }

    /**
     * Returns a string describing the context in which the exception
     * was reported.
     */
    public String getMoreData() {
        return moreData;
    }

    /**
     * Return a string corresponding to the error code used to create
     * this exception.
     */
    public String getVerfDescription() {
        switch (verfCode) {
            case verf_INVALID_SIG:
                return "The signature in the certificate is not valid.";
            case verf_INVALID_REVOKED:
                return "The certificate has been revoked.";
            case verf_INVALID_NOTBEFORE:
                return "The certificate is not yet valid.";
            case verf_INVALID_EXPIRED:
                return "The certificate has expired.";
            case verf_CA_UNTRUSTED:
                return "The Authority which issued the certificate is not trusted.";
            case verf_CHAIN_LENGTH:
                return "The certificate path to a trusted authority is too long.";
            case verf_PARSE_ERROR:
                return "The certificate could not be parsed.";
            case err_CONSTRUCTION:
                return "There was an error when constructing the certificate.";
            case err_INVALID_PUBLIC_KEY:
                return "The public key was not in the correct format.";
            case err_INVALID_VERSION:
                return "The certificate has an invalid version number.";
            case err_INVALID_FORMAT:
                return "The certificate has an invalid format.";
            case err_ENCODING:
                return "Problem encountered while encoding the data.";

            default:
                return "Unknown code:  " + verfCode;
        }
    }

    /**
     * Returns a string describing the certificate exception.
     */
    public String toString() {
        return "[Certificate Exception: " + getMessage() + ']';
    }

    /**
     * Returns a string describing the certificate exception.
     */
    public String getMessage() {
        return getVerfDescription()
                + ((moreData != null)
                ? ("\n  (" + moreData + ')') : "");
    }
}
